Tank-cover fastener.



H. MACHIN. v TANK COVER FASTBNER. APPLIUATION FILED MAR. ao, 1911.

Patented June 27, 1911.

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HERBERT MACHIN, OF KOKOMO, INDIANA, ASSIGNOR TO THE KOKOMO SANITARY MANUFACTURING CO., OF KOKOMO, INDIANA, A CORPORATION OF INDIANA.

TANK-'COVER FASTENER.

Specification of Letters Patent.

Application led March 3i), 1911.

Patented June 27, 1911.

Serial No. 617,831.

To all whom it may concern:

Be it known that I, HERBERT MACHIN, 4a citizen of the United States, residing at Kokomo, in the county of Howard and State of Indiana, have invented a new and useful Tank-Cover Fastener, of which the following is a specification.

At the present time there are, on the man ket, several makes of porcelain tanks for water closets and most of those makes comprise a loose cover held in place by its own weight. Such a construction is objectionable, especially in public places and in homes where there are children, because of the ease with which the cover may be removed and,l when removed, the mechanism within the tank may be tampered with and the cover may be dropped and broken.

The object of my present invention is to provide a construction by means of which the cover of a tank of this kind may be readily clamped in place so that its too ready removal may be prevented.

The accompanying drawings illustrate my invention.

Figure 1 is a front elevation in partial vertical section of my improved tank and clamping means, the portions shown in the section being somewhat exaggerated in size as compared with the tank; Fig. 2 a section on line 2 2 of Fig. 1; Fig. 3 a section on line 3-3 of Fig. 2, and Fig. 4 an elevation of a fragment of the side walls of the tank.

In the drawings, 10 indicates a vertical wall of the tank and 11 indicates a cover therefor, said cover being of any desired form to fit the open top of the tank and provided with one or more depending tongues 12 which are so formed, when the cover is in place on the tank, as to project downwardly into the open upper end of the tank closely adjacent the vertical Wall thereof, as clearly indicated in Fig. 1, said tongue projecting across perforations 13 formed through the wall 10. The depending tongue 12 is formed with an interiorV chamber 14 and leading into said chamber through that portion of the tongue which is adjacent the inner face of the wall 10 is a rectangular perforation 15. Formed within chamber 14, upon opposite sides of the center of perforations 15 are two shoulders or abutments 16, 16. The cover 11 and tongue 12 being formed of clay, the tongue 12 is conveniently formed integral with the cover and the chamber 14, abutments 16 and the bottom plate 17 of the chamber are conveniently formed as a separate piece in a suitable mold, so that there may be uniformity of product, and this separate piece is applied aS indicated by the dotted line 18 in Fig. 3, when clay is wet, in a manner well known to potters. In order to assist in the proper placing of this portion of the device, in forming the cover, the bottom plate 17 is perforated at 19 centrally so that the potter may readily center the abutments 16 relative to perforations 15. The perforations 13 and 15 are practically of the same size and are so formed as to permit the free passage of the rectangular head 21 of an anchor bolt 22 the stem of which is of suflicient length to project slightly from the external face of the wall 10 and is threaded to receive a finishing nut 23. In the manufacture of goods of this class it is practically impossible to obtain absolute uniformity of two mating members and it is therefore practically impossible to so form the cover with its depending tongues that the perforations 15 will absolutely register with the perforations 13, vet 1t is desirable that the perforations be as small as possible. I therefore form the perforations 13 as shown in Fig. 4, the arc shaped notches 24, 24 being provided at the middle of each of the longer sides of the perforations 13 for a purpose which will appear.

In use it is desirable that the nut 23 be solid at its outer end, the nut being` provided with a threaded socket adapted to receive a comparatively short projecting end of the anchor bolt 22 and it is for this reason that the chamber 14 is provided with bottom plate 17. In assembling the parts the operator, after placing the cover in position, will pass the head 21 of the anchor bolt through perforations 13 and 15 into chamber 14 and the bottom plate 17 of the chamber prevents too great a movement of the bolt inwardly. When the head 19 has been carried into chamber 14 the bolt may be given a quarter turn, whereupon the head 19 will be projected transverse in across the perforations 15 and into engagement with the abutment 16 so as to prevent free rota tion in a forward direction. Thereupon the operator may release the bolt and place the nut lthereon. It is at this point that the functions of the bottom plate becomes apparent, said bottom plate holding the bolt against inward movement While the nut is applied to the threaded projecting end of the bolt, said end being entirely too short to be held by the fingers durmg placing of the bolt. It is of course impossible at this stage of the operation for the operator to personally engage the inner or head end of the bolt. If, by chance, there should'be a lack of register of the perforations l5 and 13 it Will be seen that the notches 24 permit a sidewise swing of the main4 stem of the bolt which will permit the canting of the bolt lin the proper direction to permit it to be tongue having a chamber formed in its interior, which chamber has a slot of greater length than Width leading thereinto and also having a bolt head abutment and a bottom plate, an anchor bolt having a transverse head of greater length than Width so formed as to be nsertible through the perforations of the tank Wall and the slot leading into the recess of the cover tongne and having a thickness less than the depth of the cover tongue chamber, and a nut threaded upon the outer projectinrr threaded end of the anchor bolt.

In Witness whereof, I have hereunto set my hand and seal at Kokomo, Indiana, this 21stday ot' March, A. D. one thousand nine hundred and eleven. Y

HERBERT MAoHrN. [1.. Sg

lVitnesses CHAs. RVMATTI, JOHN BRIAN.

Copies of this patent may lne-obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

